Japan nuclear


Japan and America’s Nuclear Posture: Lost Promise

, China project manager and senior analyst

At the very beginning of his presidency Barack Obama promised the world he would reduce the role of nuclear weapons in U.S. national security strategy and encourage other nations to follow suit. It was the most significant single act in a new U.S. approach to international diplomacy, for which he was awarded the Nobel peace prize. Not long afterwards, Mr. Obama was presented with an historic opportunity to diminish the role of U.S. nuclear weapons in the defense of Japan. Unfortunately, he did not live up to his promise. Read more >

Bookmark and Share

Fission Stories #146: Who’s Next?

, director, Nuclear Safety Project

The nuclear nightmare at Fukushima Daiichi is the most recent in a string of nuclear accidents. In April 1986, the Unit 4 reactor at Chernobyl in the Ukraine experienced an uncontrolled increase in power that caused two “rapid disassemblies” – nukespeak for explosions. In March 1979, the Unit 2 reactor at Three Mile Island in the United States experienced a partial meltdown of its reactor core due to inadequate cooling water flow. In October 1966, the Unit 1 reactor at the Fermi plant in the United States experienced a partial meldown when cooling water flow was partially blocked through some of its reactor core. And in October 1957, the No. 1 reactor at Windscale (now Sellafield) in the United Kingdom experienced fuel damage when its graphite moderator overheated and caught on fire. Read more >

Bookmark and Share

Water Management and Mismanagement at Fukushima

, senior scientist

This photo shows the reactors (right) and the storage tanks for contaminated water (left) at Fukushima Daiichi on March 3, 2013 (Source: Google Earth)

In December 2011, the government of Japan announced with great fanfare that the nuclear reactors damaged in March at Fukushima Daiichi were in a state of “cold shutdown” and that the release of radioactive materials from the reactor containment vessels had been brought under control. Read more >

Bookmark and Share

Ed Lyman Discusses Nuclear Waste on “Living on Earth”

, co-director and senior scientist

Ed Lyman talked with Living on Earth’s Steve Curwood last week about waste from US nuclear power plants and the ongoing problems with disposing of it.

 

Bookmark and Share

Fission Stories #130: Fukushima’s Dividends or Mea Culpas

, director, Nuclear Safety Project

On March 11, 2011, an earthquake measuring 9.0 on the Richter scale off the coast of Japan spawned a large tsunami wave that overtopped the protective seawall at the Fukushima Daiichi nuclear plant. The flood waters disabled emergency equipment. The three reactors operating at the time of the earthquake experienced extensive damage due to overheating. Read more >

Bookmark and Share